Question

A student sets up an experiment to study the role of enzymes in digestion of food. In test tube A, he added egg albumin and pepsin. In test tube B, he added egg albumin, pepsin and HCl. In which test tube, the digestion of protein will occur? *
Test tube A as pepsin will breakdown into simple molecules.
Test tube B as HCl will breakdown protein into simple molecules.
Test tubes A as pepsin will breakdown protein into simple molecules.
Test tube B as HCl will activate pepsin for breakdown of protein into simple molecules.

Answer 1

Answer:

Correct Answer is B.

Explanation:

Answer 2

The role of enzymes in the digestion of food explained through the experiment is as follows:

The correct option from the above-given options is the last one that is TEST TUBE B.

HCl will activate pepsin for a breakdown of protein into simpler substances.

Reasons for the answer:

• HCl acts as a catalyst for the activation of some enzymes, here pepsin.
• Gastric juice is the combination of dilute hydrochloric acid present in minimal quantity for digestion, lipase, and other digestive enzymes.
• This gastric juice also contains pepsin, a digesting enzyme in the stomach that helps in the digestion of proteins present in food.
• Food such as milk, meat, etc contains a rich amount of protein which is digested by the breakdown of the protein into simpler molecules.
• The HCl present in gastric juice activates the pepsin.
• Then the enzyme pepsin catalyzes the proteins intake and breaks it down into simpler molecules of peptides.
• This is how the digestion of proteins in foods such as meat completes.